~ $ cd $PREFIX/lib/
ln -s libmupdf.so libmupdf-third.so
.../usr/lib $ ln -s libmupdf.so libmupdf-third.so
ln: failed to create symbolic link 'libmupdf-third.so': File exists
.../usr/lib $ pip install pymupdf                 Collecting pymupdf                                  Using cached PyMuPDF-1.24.10.tar.gz (47.0 MB)
  Getting requirements to build wheel ... done
  Installing backend dependencies ... error
  error: subprocess-exited-with-error

  × pip subprocess to install backend dependencies did not run successfully.
  │ exit code: 1
  ╰─> [42 lines of output]
      Collecting setuptools
        Using cached setuptools-75.1.0-py3-none-any.whl.metadata (6.9 kB)
      Collecting swig
        Using cached swig-4.2.1.tar.gz (27 kB)
        Installing build dependencies: started
        Installing build dependencies: finished with status 'done'
        Getting requirements to build wheel: started
        Getting requirements to build wheel: finished with status 'done'
        Preparing metadata (pyproject.toml): started
        Preparing metadata (pyproject.toml): finished with status 'done'
      Collecting libclang
        Using cached libclang-18.1.1-py2.py3-none-any.whl
      Using cached setuptools-75.1.0-py3-none-any.whl (1.2 MB)
      Building wheels for collected packages: swig
        Building wheel for swig (pyproject.toml): started
        Building wheel for swig (pyproject.toml): finished with status 'error'
        error: subprocess-exited-with-error

        × Building wheel for swig (pyproject.toml) did not run successfully.
        │ exit code: 1
        ╰─> [15 lines of output]
            /data/data/com.termux/files/usr/tmp/pip-build-env-gunh_s5n/overlay/lib/python3.11/site-packages/setuptools_scm/git.py:312: UserWarning: git archive did not support describe output
              warnings.warn("git archive did not support describe output")
            /data/data/com.termux/files/usr/tmp/pip-build-env-gunh_s5n/overlay/lib/python3.11/site-packages/setuptools_scm/git.py:331: UserWarning: unprocessed git archival found (no export subst applied)
              warnings.warn("unprocessed git archival found (no export subst applied)")
            Traceback (most recent call last):
              File "/data/data/com.termux/files/usr/tmp/pip-build-env-gunh_s5n/overlay/lib/python3.11/site-packages/skbuild/setuptools_wrap.py", line 639, in setup
                cmkr = cmaker.CMaker(cmake_executable)
                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
              File "/data/data/com.termux/files/usr/tmp/pip-build-env-gunh_s5n/overlay/lib/python3.11/site-packages/skbuild/cmaker.py", line 145, in __init__
                self.cmake_version = get_cmake_version(self.cmake_executable)
                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
              File "/data/data/com.termux/files/usr/tmp/pip-build-env-gunh_s5n/overlay/lib/python3.11/site-packages/skbuild/cmaker.py", line 102, in get_cmake_version
                raise SKBuildError(msg) from err

            Problem with the CMake installation, aborting build. CMake executable is cmake
            [end of output]

        note: This error originates from a subprocess, and is likely not a problem with pip.
        ERROR: Failed building wheel for swig
      Failed to build swig
      ERROR: ERROR: Failed to build installable wheels for some pyproject.toml based projects (swig)
      [end of output]

  note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error

× pip subprocess to install backend dependencies did not run successfully.
│ exit code: 1
╰─> See above for output.

note: This error originates from a subprocess, and is likely not a problem with pip.
.../usr/lib $